题目

A lecturer was giving a lecture to his students on stress (压力) management. He  41   a glass of water and asked the audience, “How  42  do you think this glass of water is?”        The students’ answers ranged (变化)   43  20g to 500g. “It does not matter on the absolute  44  . It depends on how  45  you hold it. If I hold it for a minute, it is OK. If I hold it for a(n)  46   , I will have a pain in my right arm. If I hold it for a day, you will have to  47  an ambulance(救护车). It is exactly the  48   weight, but the longer I hold it, the �舞蹈《飞天》舞姿优美，将观众引入仙境，起创作灵感来自飞天壁画。我们要考察飞天壁画，必须到（ ）A. 敦煌莫高窟 B. 云冈石窟 C. 秦始皇兵马俑 D. 龙门石窟